Clinical trials: Stenoses
Cholangiocarcinoma, Biliary Stricture
Diagnostic Accuracy of ERCP-guided Versus Cholangioscopy-guided Tissue Acquisition in Patients With Indeterminate Biliary Strictures Suspected to be Intrinsic .
Primary Objective: To assess the diagnostic accuracy of cholangioscopy-based assessment using SpyDS technology compared to cholangiography-based assessment using ERCP-guided biopsy and brushing in patients with indeterminate…
- Trial name
- Cholangioscopy (NCT03140007)
- Testing
- single operator cholangioscopy, ERCP guided brushing and biopsy
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Asian Institute of Gastroenterology, India
Carotid Artery Stenosis, Superficial Femoral Artery Stenosis
VFI in Healthy Vessels
There is a wealth of evidence implicating the important role of blood flow throughout all stages of the process of atherogenesis.
- Trial name
- NCT05451485
- Testing
- Blood speckle tracking, Ultrasound particle Imaging Velocimetry, 4D flow MRI
- Where
- Netherlands
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- Rijnstate Hospital
Cardiomyopathy, Dilated, Cardiomyopathy, Hypertrophic
Association of Insulin Resistance and FGF21 on Cardiac Function in Pediatric Dilated Cardiomyopathy
This study will investigate whether there is an association between insulin resistance and cardiac function in children with dilated or hypertrophic cardiomyopathy.
- Conditions
- Cardiomyopathy, Dilated, Cardiomyopathy, Hypertrophic, Insulin Resistance
- Trial name
- NCT04222101
- Testing
- Oral glucose tolerance test
- Where
- United States
- Volunteers
- 9 people, healthy volunteers welcome
- Sponsor
- Le Bonheur Children's Hospital
Aortic Stenosis
Vivio AS (Aortic Stenosis) Algorithm Optimization Study
Optimize a candidate software algorithm using data collected with the Vivio system for use as an aid in the identification of heart sounds associated with severe aortic stenosis
- Trial name
- NCT04068402
- Testing
- Vivio System
- Where
- United States
- Volunteers
- healthy volunteers welcome
- Sponsor
- Ventric Health, LLC
Healthy, Hypertrophic Cardiomyopathy
Investigation Into the Use of Ultrasound Technique in the Evaluation of Heart Disease
The human heart is divided into four chambers. One of the four chambers, the left ventricle, is the chamber mainly responsible for pumping blood out of the heart into the circulation.
- Conditions
- Healthy, Hypertrophic Cardiomyopathy, Left Ventricular Hypertrophy
- Trial name
- NCT00001632
- Where
- United States
- Volunteers
- 195 people, healthy volunteers welcome
- Sponsor
- National Heart, Lung, and Blood Institute (NHLBI)
Lumbar Spinal Stenosis
Predictors of Decompressive Laminectomy Outcomes
Decompressive laminectomy (DL) is the most common type of back surgery performed in older adults; DL treats lumbar spinal stenosis (LSS), a degenerative narrowing of the spinal canal causes pain and trouble walking.
- Trial name
- NCT02215551
- Where
- 7 sites in United States
- Volunteers
- 239 people, healthy volunteers welcome
- Sponsor
- VA Office of Research and Development
Right Ventricle, Pulmonary Valve Stenosis
Follow Up on Freestyle Valves in Children
The purpose of this study is to determine if the Medtronic Freestyle porcine valve is effective over a long period of time when it is used to replace the valve that normally allows blood to flow from the right lower pumping…
- Conditions
- Right Ventricle, Pulmonary Valve Stenosis, Pulmonary Valve Atresia
- Trial name
- NCT00385112
- Testing
- Echocardiogram
- Where
- United States
- Volunteers
- 98 people, healthy volunteers welcome
- Sponsor
- Emory University
Internal Carotid Artery Stenosis
The Observation About the Effects of Internal Carotid Artery Stenosis on Fundus Vessels and the Changes of Fundus Vessels After Interventional Therapy
The investigators plan to collect 30 participants with internal carotid artery stenosis to observed the relationship between the degree of internal carotid artery stenosis and fundus vessels （and blood flow）density before…
- Trial name
- NCT05260229
- Where
- China
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Qilu Hospital of Shandong University
Aortic Valve Stenosis, Mitral Regurgitation
Phono- and Electrocardiogram Assisted Detection of Valvular Disease
The diagnosis of valvular heart disease (VHD), or its absence, invariably requires cardiac imaging. A familiar and inexpensive tool to assist in the diagnosis or exclusion of significant VHD could both expedite access to…
- Conditions
- Aortic Valve Stenosis, Mitral Regurgitation, Heart Murmurs, Valvular Heart Disease
- Trial name
- PEA-Valve (NCT03458806)
- Testing
- AS Algorithm 1, AS Algorithm 2, MR Algorithm 1
- Where
- United States
- Volunteers
- 156 people, healthy volunteers welcome
- Sponsor
- University of California, San Francisco
Aortic Stenosis
The Role of Myocardial Fibrosis in Patients With Aortic Stenosis
Aortic stenosis is the most common adult valvular heart disease in the western world. Heart failure and sudden cardiac death are complications associated with aortic stenosis.
- Trial name
- NCT01755936
- Testing
- Cardiac Magnetic Resonance Imaging, Echocardiography, 72 hour Holter Monitor
- Where
- United Kingdom
- Volunteers
- 203 people, healthy volunteers welcome
- Sponsor
- University of Edinburgh
Hypertrophic Cardiomyopathy
Study Evaluating the Pharmacokinetics of Mavacamten in Healthy Adult Chinese Subjects
Mavacamten is a small-molecule allosteric inhibitor of cardiac myosin that reversibly inhibits its binding to cardiac actin, thereby relieving systolic hypercontractility and improving ventricular compliance.
- Trial name
- NCT05135871
- Testing
- Mavacamten
- Where
- China
- Volunteers
- 45 people, healthy volunteers welcome
- Sponsor
- LianBio LLC
Degenerative Disc Disease, Spinal Stenosis
Spine Patient Outcomes Registry for Biomet/EBI (Electro-Biology, Inc)
The purpose of this patient registry is to prospectively collect data on patients who are having spinal surgery with EBI and Interpore Cross Spine Products.
- Trial name
- SPO (NCT00726284)
- Where
- 5 sites in United States
- Volunteers
- 651 people, healthy volunteers welcome
- Sponsor
- Zimmer Biomet
Williams Syndrome, Supravalvular Aortic Stenosis
Impact of Elastin Mediated Vascular Stiffness on End Organs
Background: People with Williams Syndrome (WS) and supravalvular aortic stenosis (SVAS) have less elasticity in their blood vessels. This is called blood vessel stiffness.
- Conditions
- Williams Syndrome, Supravalvular Aortic Stenosis, Cardiovascular Disease
- Trial name
- NCT02840448
- Where
- 2 sites in United States
- Volunteers
- 159 people, healthy volunteers welcome
- Sponsor
- National Heart, Lung, and Blood Institute (NHLBI)
Proprioceptive Disorders, Stenosis
Does the Degree of Cervical Stenosis Affect Proprioception?
Neck pain is a common health problem that negatively affects the quality of life of individuals of different age groups and most people experience this problem at some point in their lives.
- Trial name
- NCT06566573
- Testing
- Pain, Normal Range of Motion, Proprioceptive Sense
- Volunteers
- 108 people, healthy volunteers welcome
- Sponsor
- Izmir Democracy University
Refractory Anastomotic Esophageal Strictures
WallFlex Esophageal Fully Covered (FC) Benign Anastomotic Stricture
The purpose of this of this study is to compare the safety and effectiveness of temporary indwell of the WallFlex Esophageal FC Metal Stent to Bougie Dilation for the treatment of refractory anastomotic esophageal strictures
- Trial name
- E7025 (NCT01699542)
- Testing
- WallFlex Esophageal RX Fully Covered Stent, Esophageal Bougie Dilator Per Investigator preference
- Where
- 4 sites in Brazil, Netherlands and 1 more
- Volunteers
- 18 people, healthy volunteers welcome
- Sponsor
- Boston Scientific Corporation
Tracheal Stenosis
Airway Management During Unusual Tracheal Stenosis
Tracheal stenosis is a serious complication following prolonged intubation. There are important differences in the challenges of airway management.
- Trial name
- NCT05317923
- Testing
- Flow Controlled Ventilation
- Where
- Turkey (Türkiye)
- Volunteers
- 24 people, healthy volunteers welcome
- Sponsor
- Istanbul University
Spinal Stenosis Lumbar, Surgical Site Infection
Efficacy of ActiveMatrix on Spinal SSI Rate
This clinical trial seeks to provide high level of evidence on the efficacy of ActiveMatrix primarily on spinal surgical site infection rate.
- Conditions
- Spinal Stenosis Lumbar, Surgical Site Infection, Back Pain Lower Back Chronic
- Trial name
- NCT05297513
- Testing
- ActiveMatrix
- Volunteers
- 275 people, healthy volunteers welcome
- Sponsor
- Baylor College of Medicine
Atherosclerosis, Hypercholesterolemia
Rosuvastatin Affecting Aortic Valve Endothelium
Recent studies support the hypothesis that aortic stenosis (AS) develops due to atherosclerosis affecting the aortic valve endothelium.
- Trial name
- NCT00114491
- Testing
- Rosuvastatin
- Where
- Portugal
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- Hospital Pedro Hispano
Non-Obstructive Coronary Atherosclerosis
Effect of Mental Stress on Myocardial Perfusion in Women
Mental stress-induced myocardial ischemia(MSIMI) has been recognized a significant clinical problem. Evidence has shown that individuals with MSIMI have 2 to 2.5 times higher risk to develop a major averse cardiovascular events…
- Trial name
- MS in women (NCT03982901)
- Testing
- Mental Stress Test
- Where
- China
- Volunteers
- 126 people, healthy volunteers welcome
- Sponsor
- Guangdong Provincial People's Hospital
Aortic Stenosis, Hypoplastic Left Heart Syndrome
Fetal Intervention for Aortic Stenosis and Evolving Hypoplastic Left Heart Syndrome
For fetuses with severe aortic stenosis, in utero balloon aortic valvuloplasty may improve fetal growth of left heart structures and thus improve potential for biventricular repair strategies after birth.
- Trial name
- NCT01736956
- Testing
- Fetal Aortic Valvuloplasty
- Where
- United States
- Volunteers
- 9 people, healthy volunteers welcome
- Sponsor
- University of California, San Francisco